Evaluation Criteria

If the Groovy code returns Boolean.TRUE,
the event is triggered and the associated task is executed.
Otherwise, nothing happens.

If the Groovy code throws an exception,
it is considered a coding error and the event is NOT triggered.
Thus, exceptions should be properly handled in the Groovy code.

Table 32.8. Variables accessible in Groovy code

Type

Key

Description

java.util.Properties

properties

An empty container which may be filled with String-String key-value pairs in your Groovy code.
It is passed to the task which may use them somehow.
For example,
the task execute graph passes these parameters to the executed graph.

java.util.Map<String, Object>

data

An empty container which may be filled with String-Object key-value pairs in your Groovy code.
It is passed to the task which may use them somehow according to its implementation -
e.g. the task execute graph passes it to the executed graph as dictionary entries.
Note that it is not serializable, thus if the task is relying on it,
it can be processed properly only on the same Cluster node.